MCQs

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1. Port spanning is another term for
   a. Port forwarding
   b. Port mirroring
   c. Port routing
   d. Port switching
   Answer: b. Port mirroringkentik​
2. SPAN stands for
   a. Switched Port Access Node
   b. Switched Port Analyzer
   c. Secure Port Analysis Network
   d. Spanning Port Allocation Node
   Answer: b. Switched Port Analyzerkentik​
3. The main purpose of port spanning is to
   a. Encrypt data on networks
   b. Monitor network traffic
   c. Route incoming data packets
   d. Increase throughput
   Answer: b. Monitor network traffickentik​
4. SPAN ports are used primarily for
   a. Connecting end-user devices
   b. Network monitoring and analysis
   c. Blocking malicious traffic
   d. Enabling wireless access
   Answer: b. Network monitoring and analysiskentik​
5. Port spanning helps detect
   a. Hardware malfunctions
   b. Malicious intrusions and anomalies
   c. Disk usage
   d. File system permissions
   Answer: b. Malicious intrusions and anomalieskentik​
6. Cisco introduced the concept of
   a. Port Spanning Tree Protocol
   b. SPAN Port Mirroring
   c. Data Link Security
   d. Encrypted LAN Access
   Answer: b. SPAN Port Mirroringcisco+1​
7. A SPAN port sends
   a. A duplicate copy of traffic to a monitoring device
   b. Encrypted packets to routers
   c. Only control-plane packets
   d. Non-replicated frames
   Answer: a. A duplicate copy of traffic to a monitoring devicekentik​
8. Remote SPAN (RSPAN) is different from SPAN because it
   a. Operates on Layer 3
   b. Mirrors traffic over Layer 2 remotely
   c. Encrypts traffic automatically
   d. Only works for VLANs
   Answer: b. Mirrors traffic over Layer 2 remotelyniagaranetworks​
9. ERSPAN allows
   a. VLAN hopping prevention
   b. Traffic capture across routed networks using GRE
   c. Automatic IP filtering
   d. NAT translation
   Answer: b. Traffic capture across routed networks using GREniagaranetworks​
10. One limitation of SPAN ports is
    a. They cannot send broadcast traffic
    b. They can drop packets under heavy load
    c. They encrypt packets
    d. They isolate VLANs
    Answer: b. They can drop packets under heavy loadneox-networks​
11. The system connected to a SPAN port is usually a
    a. Router
    b. Monitoring tool or IDS
    c. Printer
    d. DHCP server
    Answer: b. Monitoring tool or IDSkentik​
12. SPAN helps in
    a. Network troubleshooting
    b. Wireless access setup
    c. IP routing
    d. Local policy advertisement
    Answer: a. Network troubleshootingkentik​
13. SPAN operates primarily on
    a. Layer 2
    b. Layer 3
    c. Layer 4
    d. Application layer
    Answer: a. Layer 2cisco+1​
14. Port mirroring enhances
    a. Network visibility
    b. Data compression
    c. Packet encryption
    d. Routing security
    Answer: a. Network visibilityniagaranetworks​
15. In SPAN configuration, the source port is
    a. Where traffic is mirrored from
    b. The storage server
    c. The endpoint computer
    d. The VLAN controller
    Answer: a. Where traffic is mirrored from30dayscoding+1​
16. In SPAN setup, the destination port is
    a. Where the mirrored traffic is sent
    b. The router interface
    c. VLAN Trunk
    d. Wireless access point
    Answer: a. Where the mirrored traffic is sent30dayscoding​
17. Port mirroring is critical for
    a. Security audits and analysis
    b. User access control only
    c. Printing management
    d. Reducing backup time
    Answer: a. Security audits and analysiszenarmor+1​
18. When traffic is mirrored,
    a. The original packet remains unaffected
    b. The packet is modified
    c. The header is removed
    d. The checksum is disabled
    Answer: a. The original packet remains unaffectedkentik​
19. SPAN can monitor
    a. Ingress, egress, or both directions of a port
    b. Only ingress traffic
    c. Only broadcast packets
    d. Only tunneled VPN packets
    Answer: a. Ingress, egress, or both directions of a portcisco​
20. Using too many SPAN sessions can
    a. Slow switch performance
    b. Increase link encryption
    c. Add redundancy
    d. Improve speed
    Answer: a. Slow switch performanceneox-networks​
21. SPAN ports are ideal for
    a. Offline packet inspection
    b. Dynamic routing tables
    c. Access control lists
    d. Network address translation
    Answer: a. Offline packet inspectionkentik​
22. SPAN is configured using
    a. Switch management console or CLI
    b. Router configuration panel
    c. End-user GUI
    d. Cloud controller app
    Answer: a. Switch management console or CLIcisco​
23. SPAN differs from TAP because
    a. It uses software-based replication
    b. It is hardware-only
    c. It encrypts packets
    d. It blocks traffic
    Answer: a. It uses software-based replicationneox-networks​
24. TAPs provide
    a. Dedicated hardware-based traffic copying
    b. VLAN prioritization
    c. Encryption
    d. NAT support
    Answer: a. Dedicated hardware-based traffic copyingneox-networks​
25. A key use case for SPAN ports is
    a. Intrusion Detection Systems (IDS)
    b. DHCP discovery
    c. VPN handshake
    d. SNMP authentication
    Answer: a. Intrusion Detection Systems (IDS)niagaranetworks+1​
26. The SPAN destination port should
    a. Not send outgoing traffic
    b. Send all mirrored data forward
    c. Route packets dynamically
    d. Broadcast packets
    Answer: a. Not send outgoing trafficcisco​
27. SPAN ports replicate
    a. Ethernet frames
    b. Application data only
    c. IP headers
    d. DNS queries exclusively
    Answer: a. Ethernet frameskentik​
28. Port mirroring is useful in
    a. Compliance monitoring
    b. Web development
    c. Backup scheduling
    d. DHCP relay
    Answer: a. Compliance monitoringzenarmor​
29. ERSPAN uses
    a. GRE tunneling
    b. SSH encryption
    c. Port-security VLAN tagging
    d. PPP encapsulation
    Answer: a. GRE tunnelingniagaranetworks​
30. Mirror traffic in SPAN is
    a. Read-only for observers
    b. Writable by devices
    c. Editable packets
    d. Encrypted by default
    Answer: a. Read-only for observerskentik​
31. SPAN ports are configured per
    a. VLAN, interface, or session
    b. Router
    c. ARP cache
    d. File server
    Answer: a. VLAN, interface, or session30dayscoding​
32. SPAN tools often include
    a. Wireshark
    b. DHCP server
    c. NTP client
    d. FTP agent
    Answer: a. Wiresharkkentik​
33. The reliability of SPAN is reduced under
    a. High traffic load
    b. File transfers
    c. VPN login
    d. Static IP address
    Answer: a. High traffic loadneox-networks​
34. SPAN can be implemented
    a. Locally or remotely
    b. Only locally
    c. Only across subnets
    d. Via proxy servers
    Answer: a. Locally or remotelyniagaranetworks​
35. An advantage of SPAN is
    a. No need for extra hardware
    b. Guaranteed performance
    c. Packet loss reduction
    d. Data encryption
    Answer: a. No need for extra hardwareneox-networks​
36. SPAN ports cannot
    a. Send mirrored traffic upstream
    b. Apply QoS policies
    c. Transmit broadcast
    d. Forward user data
    Answer: b. Apply QoS policiesneox-networks​
37. Port spanning supports
    a. VLAN-specific mirroring
    b. Encrypted VLAN tunneling
    c. WAN-only capture
    d. SNMPv3 sessions
    Answer: a. VLAN-specific mirroring30dayscoding+1​
38. SPAN ports can duplicate
    a. Both ingress and egress packets
    b. Broadcast packets only
    c. Layer 3 only
    d. Non-routed frames
    Answer: a. Both ingress and egress packetscisco​
39. SPAN helps in identifying
    a. Latency and performance bottlenecks
    b. Hardware failures
    c. VLAN tags
    d. IP spoofing only
    Answer: a. Latency and performance bottleneckskentik​
40. SPAN destination ports connect to
    a. IDS or packet analyzers
    b. End-user PCs
    c. DHCP relays
    d. Domain controllers
    Answer: a. IDS or packet analyzerskentik​
41. SPAN sessions can be
    a. One source to one destination
    b. Many-to-one
    c. One-to-many
    d. All of the above
    Answer: d. All of the abovecisco​
42. SPAN is crucial for
    a. Network visibility and diagnostics
    b. Wireless coverage
    c. DHCP management
    d. IP addressing
    Answer: a. Network visibility and diagnosticskentik​
43. Port mirroring enables
    a. Passive network monitoring
    b. Traffic modification
    c. Active routing
    d. Packet destruction
    Answer: a. Passive network monitoringkentik​
44. A common misuse of SPAN is
    a. Treating it as packet forwarding
    b. Using it with IDS
    c. Employing it for system backups
    d. VLAN mirroring
    Answer: a. Treating it as packet forwardingneox-networks​
45. SPAN ports must be
    a. Properly isolated from production traffic
    b. Integrated into routing loops
    c. Used as trunk ports
    d. Enabled for all VLANs
    Answer: a. Properly isolated from production traffic30dayscoding​
46. RSPAN allows capture from
    a. Remote switches over a Layer 2 network
    b. WAN routers only
    c. Cloud services
    d. Virtual machines only
    Answer: a. Remote switches over a Layer 2 networkniagaranetworks​
47. SPAN sessions require
    a. Manual configuration
    b. Cloud provisioning
    c. DHCP mapping
    d. IP binding
    Answer: a. Manual configuration30dayscoding+1​
48. SPAN’s main drawback for forensic analysis is
    a. Packet drops during overload
    b. Lack of encryption
    c. Too much storage use
    d. VLAN conflicts
    Answer: a. Packet drops during overloadneox-networks​
49. SPAN traffic is unacknowledged because
    a. It is a copy only
    b. It lacks TCP headers
    c. It uses UDP
    d. It bypasses checksums
    Answer: a. It is a copy onlykentik​
50. In cybersecurity, port spanning assists in
    a. Monitoring data exfiltration and attacks
    b. Network topology changes only
    c. DHCP lease renewals
    d. User account synchronization
    Answer: a. Monitoring data exfiltration and attacksniagaranetworks+2​

1. https://www.kentik.com/blog/what-is-port-mirroring-span-explained/
2. https://www.cisco.com/c/en/us/support/docs/switches/catalyst-6500-series-switches/10570-41.html
3. https://blog.niagaranetworks.com/blog/to-span-the-virtual-network
4. https://www.neox-networks.com/en/solutions/network-tap-versus-span-mirror-port/
5. https://30dayscoding.com/blog/span-port-configuration-guide
6. https://www.zenarmor.com/docs/network-basics/what-is-port-mirroring
7. https://www.sanfoundry.com/cyber-security-questions-answers-ports-types-1/
8. https://www.sanfoundry.com/1000-cyber-security-questions-answers/
9. https://www.theknowledgeacademy.com/blog/cyber-security-mcq-and-answers/
10. https://www.interviewbit.com/cyber-security-mcq/
11. https://www.scribd.com/document/515140126/Cyber-Security
12. https://byjus.com/gate/cyber-security-mcqs/
13. https://www.cisco.com/en/US/docs/switches/lan/catalyst3850/software/release/3.2_0_se/multibook/configuration_guide/b_consolidated_config_guide_3850_chapter_011111.pdf
14. https://testbook.com/objective-questions/mcq-on-cyber-security-and-emerging-technologies–5eea6a0d39140f30f369e309
15. https://www.alooba.com/skills/concepts/routing-and-switching-611/switch-port-security/
16. https://www.vinsys.com/blog/top-30-mcqs-ceh-exam-preparation
17. https://www.yeahhub.com/cyber-security-mcq-35-questions-with-answers/
18. https://www.sciencedirect.com/topics/computer-science/port-mirroring
19. https://www.grandmetric.com/knowledge-base/design_and_configure/span-port-configuration/
20. https://www.youtube.com/watch?v=s-DKOkWDFyw